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87015713 = 1511733331
BaseRepresentation
bin1010010111111…
…00000100100001
320001201212010012
411023330010201
5134234000323
612345014305
72104423061
oct513740441
9201655105
1087015713
1145133214
1225184395
13150487b5
14b7b13a1
15798c678
hex52fc121

87015713 has 8 divisors (see below), whose sum is σ = 88124736. Its totient is φ = 85914000.

The previous prime is 87015679. The next prime is 87015727. The reversal of 87015713 is 31751078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87015713 - 216 = 86950177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87015713.

It is not an unprimeable number, because it can be changed into a prime (87015743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24458 + ... + 27788.

It is an arithmetic number, because the mean of its divisors is an integer number (11015592).

Almost surely, 287015713 is an apocalyptic number.

It is an amenable number.

87015713 is a deficient number, since it is larger than the sum of its proper divisors (1109023).

87015713 is a wasteful number, since it uses less digits than its factorization.

87015713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 87015713 is about 9328.2213202732. The cubic root of 87015713 is about 443.1314368284.

The spelling of 87015713 in words is "eighty-seven million, fifteen thousand, seven hundred thirteen".

Divisors: 1 151 173 3331 26123 502981 576263 87015713